Given a 2D array int[][] data = {{1,2},{3,4},{5,6}}, write the output of this code snippet:

Given a 2D array int[][] data = {{1,2},{3,4},{5,6}}, write the output of this code snippet:

int sum = 0;
for(int i = 0; i < data.length; i++) {
  for(int j = 0; j < data[i].length; j++) {
    sum += data[i][j];
  }
}
System.out.println(sum);